A driving circuit and a display panel are provided. The driving circuit includes a light-emitting device, a light-emitting controlling module, and a grayscale controlling module. The grayscale controlling module includes a first transistor and a second transistor. A conduction time of the first transistor partially overlaps the conduction time of the second transistor to realize that a light-emitting duration of the light-emitting device is less than a minimum conduction time of the first transistor or the minimum conduction time of the second transistor.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The driving circuit according to claim 1, wherein the first transistor is one of an N-type transistor and a P-type transistor, and the second transistor is the other of an N-type transistor and a P-type transistor.
3. The driving circuit according to claim 2, wherein a conduction time of the P-type transistor is greater than a cut-off time of the P-type transistor in a predetermined period; the driving circuit controls a light-emitting duration of the light-emitting device based on the conduction time of the N-type transistor.
4. The driving circuit according to claim 2, wherein a gate of the first transistor is fed with a first controlling signal; a gate of the second transistor is fed with a second controlling signal; there is a phase difference between the first controlling signal and the second controlling signal.
5. The driving circuit according to claim 4, wherein a duty ratio of the first controlling signal is equal to a duty ratio of the second controlling signal.
7. The driving circuit according to claim 1, further comprising a third transistor; a gate of the third transistor is electrically connected to a third controlling terminal; a source of the third transistor and a drain of the third transistor are both connected between a first supply voltage terminal and other modules.
9. The driving circuit according to claim 8, wherein the third transistor is conducted when or before the first transistor and the second transistor are simultaneously conducted; the third transistor is cut off when or after the first transistor or the second transistor is cut off.
10. The driving circuit according to claim 9, wherein the conduction time of the third transistor is equal to the conduction time of the first transistor or the conduction time of the second transistor.
13. The display panel according to claim 12, wherein a gate of the first transistor is fed with a first controlling signal; a gate of the second transistor is fed with a second controlling signal; there is a phase difference between the first controlling signal and the second controlling signal.
14. The display panel according to claim 13, wherein a duty ratio of the first controlling signal is equal to a duty ratio of the second controlling signal.
16. The display panel according to claim 12, wherein the driving circuit further comprises a third transistor; a gate of the third transistor is electrically connected to a third controlling terminal; a source of the third transistor and a drain of the third transistor are both connected between a first supply voltage terminal and other modules.
18. The display panel according to claim 17, wherein the third transistor is conducted when or before the first transistor and the second transistor are simultaneously conducted; the third transistor is cut off when or after the first transistor or the second transistor is cut off.
19. The display panel according to claim 18, wherein the conduction time of the third transistor is equal to the conduction time of the first transistor or the conduction time of the second transistor.
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February 25, 2022
August 6, 2024
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